To make this Gingerbread Bundt Cake Recipe gluten free, replace the all-purpose flour with a certified gluten-free 1:1 baking flour blend. Verify that the baking powder, baking soda, powdered sugar, molasses, candied ginger, vanilla extract, spices, buttermilk, and all packaged ingredients are labeled gluten free or free from gluten-containing additives. Use clean mixing bowls, measuring cups, utensils, and a clean Bundt pan to prevent cross-contact with gluten-containing ingredients.